Home Health Testing®

Drug Detection Periods

When using a hair drug test, it will take approximately 5 days after drug usage until traces of the drug become embedded in a person's hair follicles. That process will continue for approximately 90 days.

When using a urinary drug test, the best time to determine the presence of drugs is by testing the first urine of the morning, as it is the most concentrated and will yield the most accurate results. The following chart indicates the time period drugs will stay in the body depending on factors such as degree of usage, a person’s metabolism and individual body weight. The detection periods are applicable to both urinary and saliva drug tests.

	Drug	Detection Period
	Thc	5 to 30 days
	Cocaine	2 to 3 days
	Opiates	4 to 10 days
	Amphetamines	2 to 4 days
	Methamphetamines	2 to 4 days
	MDMA	2 to 4 days
	PCP	10 to 14 days
	Barbiturates	14 to 21 days
	Benzodiazepines	2 to 4 days
	Oxycodone	2 to 4 days
	Cotinine	2 to 4 days

The blood alcohol concentration at which a person becomes impaired is variable, dependent upon the individual. Specific parameters such as gender, physical size, weight, activity level, eating habits and alcohol tolerance all affect the level of impairment of an individual. However, in general the human body processes alcohol in 4 to 6 hours.

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Last Revision Made 1/01/08

drug detection periods